As Gawker reported yesterday, John McCain will return to SNL tonight, ensuring that no matter what happens, the final Sunday morning talk shows before the election will be buzzing with clips of his appearance. Will McCain's appearance be a success? Will he make any major gaffes? Win the hearts of undecided voters? Or will he, as one Gawker commenter so hilariously suggested, "put the turd in Saturday Night live." Be sure to stop back and join us for tonight's SNL live thread, and we'll all find out together.